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Individual
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Individual
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Priority to ES0038228UpriorityCriticalpatent/ES38228Y/es
Publication of ES38228UpublicationCriticalpatent/ES38228U/es
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Publication of ES38228YpublicationCriticalpatent/ES38228Y/es
Libro de hojas cambiables perfeccionado, caracterizado por que sus tapas, fabricadas en caucho, material plástico, metales o cartón prensado, llegan un cajeado en su parte interior, para el mecanismo que tensa las correas o tiras que sujetan las hojas, y en su parte exterior unos rebajos longitudinales en los márgenes y otro rectangular en el centro, que respectivamente facilitan el manejo del libro y permiten colocar la etiqueta.
ES0038228U1953-09-241953-09-24Libro de hojas cambiables, perfeccionado
ExpiredES38228Y
(es)